Abstract
EFFECTS OF DIFFERENT DISSOLVED ORGANIC CARBON CONCENTRATIONS AND BACTERIAL ACTIVITY ON BIODEGRADATION OF MICROCYSTIN (CYANOTOXIN). Microcystins degradation depends on several factors like initial concentration in water, presence of microorganisms, temperature, pH, presence of other available sources of organic carbon, and others. The aims of this study were to measure microcystin degradation under different concentrations of dissolved organic carbon (DOC), and determine the influence of bacterial community on this process. For this purpose, water from the Jacarepagua Lagoon (Rio de Janeiro, Brazil) was diluted in deionized water in order to obtain final concentrations of DOC of 60, 43 and 28mg L -1 (water with bacteria), and final DOC concentrations of 43 and 60mg L -1 (water without bacteria). A semi-purified microcystin extract was prepared and mixed
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